2010 marks the first year that a motocross manufacturer has gone completely electronic fuel injection. Suzuki was the first to strike with their EFI system two years ago. It would only seem obvious that the yellow crew would come out with a fuel injected 250 four-stroke. To view all of the supplied photos that Suzuki has provided, take a look at our photo gallery (CLICK ON PHOTOS). You can also click on either bike below, which will take you to the requested bike photo gallery.
2010 SUZUKI RM-Z250 PHOTO GALLERY
2010 SUZUKI RM-Z450 PHOTO GALLERY
2010 SUZUKI RM-Z250 SPECS
Suzuki
races to win, period. And, thanks to the hard work of Ryan Dungey in
the U.S., the RM-Z250 is the AMA Supercross Lites West Coast Champion
for 2009. But winning goes beyond the champagne. For the 2010 RM-Z250,
Suzuki applied lessons learned on the track to turn up the speed,
handling and confidence you’ll get racing every day, anywhere in the
world.
Suzuki
racing technology is everywhere you look: advanced Suzuki fuel
injection is fitted for the first time on a four-stroke 250cm3 Suzuki
motocross machine. Further engine modifications boost peak power
without giving up any of the low-end or midrange that has made the
RM-Z250 the choice of top riders everywhere. Chassis updates improve
handling with key suspension upgrades making the new RM-Z250 the
perfect weapon for motocross racers worldwide. And there’s the
eye-catching slim, aggressive styling that causes the RM-Z250 to stand
out at any track.
Think of the 2010 RM-Z250 as the perfect racing package. Championship winning performance, now improved beyond the reach of the competition.
Fuel Injection
Derived
from the pacesetting RM-Z450’s superlative system, the RM-Z250’s
battery-less injection features a 43mm throttle body with progressive
throttle linkage, a 16-bit computer and unique capacitor-assisted
starting system. A durable, lightweight magneto-generator powers the
fuel injection after starting. Because all engine systems are related
in performance, a new muffler is fitted to optimize the benefits of
fuel injection.
Power at the Top
Engine
modifications for the RM-Z250 maintain its impressive low-to-midrange
power but add a thrilling high-rpm rush to the mix—precisely what
expert-level riders want in a potent 4-stroke racing engine. Revised
cam timing works in conjunction with updated intake ports to boost
power and torque at the top of the power band. A new, stronger
connecting rod and mirror finishing permits maximum engine speed
increased to a stunning 13,500 rpm. Crankshaft modifications similar in
spec to the championship-winning RM-Z450 increase rigidity and
strength. The 249cm3 engine continues to use a DOHC, 4-valve head
design with lightweight titanium valves riding in an advanced pent-roof
cylinder head and semi-dry-sump lubrication system reduces internal
friction. With a top-end rush like no other, the RM-Z250’s engine has
to be experienced to be believed.
Chassis Updates
In
the search for handling perfection, the RM-Z250’s twin-spar aluminum
alloy frame has been redesigned with several key components to optimize
rigidity balance and improve traction at high speed. The lower frame
tube has thicker walls, 3.0mm versus 2.5mm, while the side rails are
slightly shallower. Connecting the 19-inch rear wheel and the
lightweight chassis is a new swingarm with an improved center brace for
increased rigidity that also more concentrates its mass for enhanced
suspension action and greater traction. To prove that Suzuki
understands the importance of details, new footrest brackets are
designed to prevent mud clogging.
High-Performance Suspension, Updated
Thoroughly
revised spring and damping rates inside the inverted Showa 47mm fork
and piggyback single shock result in improved handling for a wide range
of riders. Carefully chosen modifications improve traction and rider
confidence at high speed without sacrificing the RM-Z’s legendary
quick-turning ability. Modifications to the rear suspension linkage
that reduce thrust backlash also improve traction and make for more
consistent performance.
Radiator Louvers
Improved
radiator louvers direct more cooling air to the twin side-mounted
aluminum alloy radiators for lower engine temperatures. They are joined
to the outer bodywork for increased strength without adding weight.
Color Coded
For
2010, the RM-Z250’s number plates have a black background to conform to
rules for competition numbers. It’s one less thing to worry about so
racers can concentrate on winning.
2010 RM-Z250 Technical Specifications
Overall Length: 2,170 mm (85.4 in.)
Overall Width: 830 mm (32.7 in.)
Overall Height: 1,270 mm (50.0 in.)
Wheelbase: 1,475 mm (58.1 in.)
Ground Clearance: 345 mm (13.6 in.)
Seat Height: 955 mm (37.6 in.)
Curb Weight: 104.5 kg (230.4 lbs.)
Engine Type: 4-stroke, liquid cooled, DOHC
Bore: 77.0 mm
Stroke: 53.6 mm
Displacement: 249 cm3
Compression Ratio: 13.4:1
Fuel System: Fuel Injection
Lubrication System: Suzuki Advanced Sump System
Clutch: Wet multi-plate type
Transmission: 5-speed constant mesh
Primary Reduction Ratio: 3.210 (61/19)
Gear Ratios:
1st 2.153 (28/13)
2nd 1.764 (30/17)
3rd 1.470 (25/17)
4th 1.238 (26/21)
5th 1.090 (24/22)
Final Reduction Ratio: 4.000 (48/12)
Front Suspension: SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension: Swingarm, link type, SHOWA piggyback-reservoir shock
Caster: 30°20’
Trail: 140mm (5.5 in.)
Front Brake: Disc
Rear Brake: Disc
Front Tire Size: 80/100-21
Rear Tire Size: 100/90-19
Fuel Tank Capacity: 6.5 L (1.7 US gal.)
Body Color: Sold Black/Champion Yellow No. 2 (GY8)
2010 SUZUKI RM-Z450 SPECS
Two
years ago, Suzuki stunned the world with the first fuel-injected
motocross racebike. It was more than unique...it was a winner. Around
the globe, the RM-Z450 helped racers collect wins and trophies,
fiercely competing in venues from the World MX1 series to America’s AMA
Supercross championship.
Now the question: Is there any way to improve on this incredible success? Sure there is. But you have to be Suzuki to do it.
Take
a close look at the 2010 RM-Z450, a thoroughly updated, cutting-edge
open-class motocrosser that’s more potent than ever. Across-the-board
engine upgrades boost power from awesome to awe-inspiring. Detailed
frame and suspension modifications improve an already sharp-turning
racebike. As a racer, you want quick, laser-accurate steering and
confidence-inspiring high-speed handling in one package. And you want a
high performance machine whose racing pedigree enables it to be
competitive right out of the crate? Here is Suzuki's answer!
When
Suzuki introduced the first fuel-injected motocrosser in history, it
jumped way ahead of the pack. With the new 2010 RM-Z450, your
competitive advantage just got that much bigger.
Powered Up!
Suzuki’s
engineers have carefully developed the RM-Z450’s powerful 449cm3, DOHC,
4-valve engine to increase power throughout the rev range. Always known
for its incredible midrange grunt, the 2010 RM-Z450 also has
arm-stretching high-rpm power. A combination of revised cam profiles
and reworked cylinder-head porting give the RM-Z450 amazing
idle-to-redline thrust. An improved camchain tensioner provides more
consistent performance. Also a modified throttle linkage makes the
low-speed response more progressive. How’s that? More power and better
manners.
Fuel Injection, Pioneered and Improved
For
2010, the RM-Z450’s electronic fuel injection is improved with a
reversed throttle valve movement. Such a simple alteration pays
handsomely: The fine fuel-air mist from the 12-hole fuel injector is
directed away from the throttle valve for a more uniform mixture
producing increased power and enhanced throttle response.
Chassis Dynamic
Everywhere
you look, the RM-Z450’s twin-spar aluminum alloy frame has received
detail improvements to optimize rigidity balance. It starts with the
head stock, which is now a two-piece design that’s 9mm taller than
before. Further back, the sections at the rear of the frame, which are
made up of extruded and cast members, are now wider for increased
rigidity. More strength comes from a wider upper frame bridge beneath
the saddle, while material wall thickness was strategically designed to
save weight.
High-Quality Showa Suspension
The
RM-Z450 employs race-bred, state-of-the-art Showa suspension front and
rear. For 2010, both ends of the bike are given suitably revised spring
and damping rates—the new rates work together with the chassis’
optimized rigidity balance to improve handling. 47mm inverted forks
provide optimum wheel travel and can be adjusted for compression as
well as rebound damping for maximum rider adjustability. A Showa
piggyback reservoir rear shock offers both high- and low-speed
compression damping adjustment along with rebound damping and spring
preload adjustments. Working through Suzuki’s superlative rising-rate
linkage system—now with revised link-bearing tolerances for precise
handling performance—the shock provides 310mm of wheel travel
delivering maximum traction.
2010 RM-Z450 Technical Specifications
Overall Length: 2,190 mm (86.2 in.)
Overall Width: 830 mm (32.7 in.)
Overall Height: 1,270 mm (50.0 in.)
Wheelbase: 1,495 mm (58.9 in.)
Ground Clearance: 325 mm (12.8 in.)
Seat Height: 955 mm (37.6 in.)
Curb Weight: 112.5 kg (248.0 lbs.)
Engine Type: 4-stroke, liquid cooled, DOHC
Bore: 96.0 mm
Stroke: 62.1 mm
Displacement: 449 cm3
Compression Ratio: 12.2:1
Fuel System: Fuel Injection
Lubrication System: Suzuki Advanced Sump System
Clutch: Wet multi-plate type
Transmission: 5-speed constant mesh
Primary Reduction Ratio: 2.625 (63/24)
Gear Ratios
1st: 1.800 (27/15)
2nd: 1.471 (25/17)
3rd: 1.235 (21/17)
4th: 1.050 (21/20)
5th: 0.909 (20/22)
Final Reduction Ratio: 3.846 (50/13)
Front Suspension: SHOWA 47mm telescopic forks, pneumatic/coil spring, oil damped
Rear Suspension: Swingarm, link type, SHOWA piggyback-reservoir shock
Caster: 29°40’
Trail: 130mm (5.1 in.)
Front Brake: Disc
Rear Brake: Disc
Front Tire Size: 80/100-21
Rear Tire Size: 110/90-19
Fuel Tank Capacity: 6.2 L (1.6 US gal.)
Body Color: Sold Black/Champion Yellow No. 2 (GY8)
Suzuki Motorcycle tests
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